package com.eistert.java.algorithm.kmp;

/**
 * @Description: 字符串暴力匹配
 * @Author: ai
 * @create: 2023-04-26 16:04
 */
public class ViolenceMatch {

    public static void main(String[] args) {
        String str1 = "硅硅谷 尚硅谷你尚硅 尚硅谷你尚硅谷你尚硅你好";
        String str2 = "尚硅谷你尚硅你";
        int index = violenceMatch(str1, str2);
        System.out.println("index=" + index);
    }

    public static int violenceMatch(String str1, String str2) {
        char[] s1 = str1.toCharArray();
        char[] s2 = str2.toCharArray();

        int s1Len = s1.length;
        int s2Len = s2.length;

        int i = 0;
        int j = 0;

        while (i < s1Len && j < s2Len) {
            if (s1[i] == s2[j]) {
                ++i;
                ++j;
            } else {
                i = i - (j - 1);
                j = 0;
            }
        }

        return j == s2Len ? i - j : -1;

    }

}
